Merge branch 'master' into 'feature/add-openapi-spe'

# Conflicts:
#   src/main/java/dev/amatos/restcountries/controller/CountryControllerV2.java
#   src/main/java/dev/amatos/restcountries/controller/CountryControllerV31.java

pom.xml

@@ -89,7 +89,7 @@
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-core</artifactId>
-      <version>2.15.0</version>
+      <version>2.17.0</version>
     </dependency>
     <dependency>
       <groupId>org.jboss.spec.javax.ws.rs</groupId>

src/main/java/dev/amatos/restcountries/controller/ControllerHelper.java

@@ -1,5 +1,18 @@
 package dev.amatos.restcountries.controller;
 
+import com.google.gson.Gson;
+import com.google.gson.JsonParser;
+import dev.amatos.restcountries.domain.ICountryRestSymbols;
+import dev.amatos.restcountries.domain.ResponseEntity;
+import dev.amatos.restcountries.domain.base.BaseCountry;
+import io.micronaut.http.HttpResponse;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Set;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
+
 public class ControllerHelper {
 
   protected static final String[] V3_COUNTRY_FIELDS = new String[]{
@@ -41,4 +54,89 @@ public class ControllerHelper {
       "capitalInfo",
       "postalCode"
   };
+
+  protected static final String[] COUNTRY_FIELDS_V2 = new String[]{
+      "name",
+      "topLevelDomain",
+      "alpha2Code",
+      "alpha3Code",
+      "callingCodes",
+      "capital",
+      "altSpellings",
+      "region",
+      "subregion",
+      "translations",
+      "population",
+      "latlng",
+      "demonym",
+      "area",
+      "gini",
+      "timezones",
+      "borders",
+      "nativeName",
+      "numericCode",
+      "currencies",
+      "languages",
+      "flags",
+      "regionalBlocs",
+      "cioc",
+      "independent",
+      "continent",
+      "borders",
+      "flag",
+      "flags"
+  };
+
+  protected static HttpResponse<Object> ok(Object object) {
+    return HttpResponse.ok(object);
+  }
+
+  protected static HttpResponse<Object> notFound() {
+    var gson = new Gson();
+    var notFound = Response
+        .status(Status.NOT_FOUND)
+        .entity(gson.toJson(new ResponseEntity(Response.Status.NOT_FOUND.getStatusCode(),
+            Response.Status.NOT_FOUND.getReasonPhrase()))).build().getEntity();
+    return HttpResponse.notFound(notFound);
+  }
+
+  protected static HttpResponse<Object> internalError() {
+    var gson = new Gson();
+    var notFound = Response
+        .status(Status.INTERNAL_SERVER_ERROR)
+        .entity(gson.toJson(new ResponseEntity(Response.Status.INTERNAL_SERVER_ERROR.getStatusCode(),
+            Response.Status.INTERNAL_SERVER_ERROR.getReasonPhrase()))).build().getEntity();
+    return HttpResponse.serverError(notFound);
+  }
+
+  protected static HttpResponse<Object> badRequest() {
+    var gson = new Gson();
+    var notFound = Response
+        .status(Status.BAD_REQUEST)
+        .entity(gson.toJson(new ResponseEntity(Response.Status.BAD_REQUEST.getStatusCode(),
+            Response.Status.BAD_REQUEST.getReasonPhrase()))).build().getEntity();
+    return HttpResponse.badRequest(notFound);
+  }
+
+  protected static Object parsedCountry(Set<? extends BaseCountry> countries, String fields) {
+    if (fields == null || fields.isEmpty()) {
+      return countries;
+    } else {
+      StringBuilder result = new StringBuilder();
+      countries.forEach(country -> result.append(
+          getCountryJson(country, Arrays.asList(fields.split(ICountryRestSymbols.COLON)))));
+      return result;
+    }
+  }
+
+  private static String getCountryJson(BaseCountry country, List<String> fields) {
+    var gson = new Gson();
+    var parser = new JsonParser();
+    var jsonObject = parser.parse(gson.toJson(country)).getAsJsonObject();
+    List<String> excludedFields = new ArrayList<>(Arrays.asList(V3_COUNTRY_FIELDS));
+    excludedFields.removeAll(fields);
+    excludedFields.forEach(jsonObject::remove);
+    return jsonObject.toString();
+  }
+
 }

src/main/java/dev/amatos/restcountries/controller/CountryControllerV2.java

@@ -8,7 +8,9 @@ import dev.amatos.restcountries.domain.ICountryRestSymbols;
 import dev.amatos.restcountries.domain.ResponseEntity;
 import dev.amatos.restcountries.service.v2.CountryServiceV2;
 import dev.amatos.restcountries.domain.v2.Country;
+import io.micronaut.http.HttpResponse;
 import io.micronaut.http.MediaType;
+import io.micronaut.http.MutableHttpResponse;
 import io.micronaut.http.annotation.Controller;
 import io.micronaut.http.annotation.Get;
 import io.micronaut.http.annotation.PathVariable;
@@ -32,28 +34,180 @@ public class CountryControllerV2 {
     return checkFieldsAndParseCountries(fields, countries);
   }
 
-  private Object checkFieldsAndParseCountries(Optional<String> fields, List<Country> countries) {
-    if (fields.isPresent()) {
-      return parsedCountries(countries, fields.get());
-    } else {
-      return parsedCountries(countries, null);
-    }
-  }
-
   @Get("alpha/{alphacode}")
-  public Object getByAlpha(@PathVariable("alphacode") String alpha,
+  public HttpResponse<Object> getByAlpha(@PathVariable("alphacode") String alpha,
       @QueryValue("fields") Optional<String> fields) {
     if (alpha.contains("codes")) {
       alpha = alpha.replace("codes=", "");
     }
     if (isEmpty(alpha) || alpha.length() < 2 || alpha.length() > 3) {
-      return getResponse(Response.Status.BAD_REQUEST);
+      return ControllerHelper.badRequest();
     }
     Country country = CountryServiceV2.getInstance().getByAlpha(alpha);
     if (country != null) {
-      return checkFieldsAndParseCountry(country, fields);
+      return HttpResponse.ok(checkFieldsAndParseCountry(country, fields));
+    }
+    return ControllerHelper.notFound();
+  }
+
+  @Get("alpha/")
+  public HttpResponse<Object> getByAlphaList(@QueryParam("codes") String codes,
+      @QueryParam("fields") Optional<String> fields) {
+    if (isEmpty(codes) || codes.length() < 2 || (codes.length() > 3 && !codes.contains(","))) {
+      return ControllerHelper.badRequest();
+    }
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByCodeList(codes);
+      if (null != countries && !countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+
+  }
+
+  @Get("currency/{currency}")
+  public HttpResponse<Object> getByCurrency(@PathVariable("currency") String currency,
+      @QueryParam("fields") Optional<String> fields) {
+    if (isEmpty(currency) || currency.length() != 3) {
+      return ControllerHelper.badRequest();
+    }
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByCurrency(currency);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("name/{name}")
+  public HttpResponse<Object> getByName(@PathVariable("name") String name,
+      @QueryParam("fullText") Optional<Boolean> fullText,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance()
+          .getByName(name, fullText.orElse(false));
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("callingcode/{callingCode}")
+  public HttpResponse<Object> getByCallingCode(@PathVariable("callingCode") String callingCode,
+      @QueryParam("fields") Optional<String> fields) {
+
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByCallingCode(callingCode);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("capital/{capital}")
+  public HttpResponse<Object> getByCapital(@PathVariable("capital") String capital,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByCapital(capital);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("region/{region}")
+  public HttpResponse<Object> getByContinent(@PathVariable("region") String region,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByRegion(region);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("subregion/{subregion}")
+  public HttpResponse<Object> getBySubRegion(@PathVariable("subregion") String subregion,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getBySubregion(subregion);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("lang/{lang}")
+  public HttpResponse<Object> getByLanguage(@PathVariable("lang") String language,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByLanguage(language);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+
+  }
+
+  @Get("demonym/{demonym}")
+  public HttpResponse<Object> getByDemonym(@PathVariable("demonym") String demonym,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByDemonym(demonym);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("regionalbloc/{regionalBlock}")
+  public HttpResponse<Object> getByRegionalBloc(@PathVariable("regionalBlock") String regionalBlock,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      List<Country> countries = CountryServiceV2.getInstance().getByRegionalBloc(regionalBlock);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  private List<Country> checkFieldsAndParseCountries(Optional<String> fields,
+      List<Country> countries) {
+    if (fields.isPresent()) {
+      return parsedCountries(countries, fields.get());
+    } else {
+      return parsedCountries(countries, null);
     }
-    return getResponse(Response.Status.NOT_FOUND);
   }
 
   private Object checkFieldsAndParseCountry(Country country, Optional<String> fields) {
@@ -64,158 +218,7 @@ public class CountryControllerV2 {
     }
   }
 
-  @Get("alpha/")
-  public Object getByAlphaList(@QueryParam("codes") String codes,
-      @QueryParam("fields") Optional<String> fields) {
-    if (isEmpty(codes) || codes.length() < 2 || (codes.length() > 3 && !codes.contains(","))) {
-      return getResponse(Response.Status.BAD_REQUEST);
-    }
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByCodeList(codes);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-
-  }
-
-  @Get("currency/{currency}")
-  public Object getByCurrency(@PathVariable("currency") String currency,
-      @QueryParam("fields") Optional<String> fields) {
-    if (isEmpty(currency) || currency.length() != 3) {
-      return getResponse(Response.Status.BAD_REQUEST);
-    }
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByCurrency(currency);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("name/{name}")
-  public Object getByName(@PathVariable("name") String name,
-      @QueryParam("fullText") Optional<Boolean> fullText,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance()
-          .getByName(name, fullText.orElse(false));
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("callingcode/{callingCode}")
-  public Object getByCallingCode(@PathVariable("callingCode") String callingCode,
-      @QueryParam("fields") Optional<String> fields) {
-
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByCallingCode(callingCode);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("capital/{capital}")
-  public Object getByCapital(@PathVariable("capital") String capital,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByCapital(capital);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("region/{region}")
-  public Object getByContinent(@PathVariable("region") String region,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByRegion(region);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("subregion/{subregion}")
-  public Object getBySubRegion(@PathVariable("subregion") String subregion,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getBySubregion(subregion);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("lang/{lang}")
-  public Object getByLanguage(@PathVariable("lang") String language,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByLanguage(language);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-
-  }
-
-  @Get("demonym/{demonym}")
-  public Object getByDemonym(@PathVariable("demonym") String demonym,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByDemonym(demonym);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("regionalbloc/{regionalBlock}")
-  public Object getByRegionalBloc(@PathVariable("regionalBlock") String regionalBlock,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      List<Country> countries = CountryServiceV2.getInstance().getByRegionalBloc(regionalBlock);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return getResponse(Response.Status.NOT_FOUND);
-    } catch (Exception e) {
-      return getResponse(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  private Object parsedCountries(List<Country> countries, String excludedFields) {
+  private List<Country> parsedCountries(List<Country> countries, String excludedFields) {
     if (excludedFields == null || excludedFields.isEmpty()) {
       return countries;
     } else {
@@ -224,37 +227,28 @@ public class CountryControllerV2 {
     }
   }
 
-  private String getCountriesJson(List<Country> countries, List<String> fields) {
+  private List<Country> getCountriesJson(List<Country> countries, List<String> fields) {
+    List<Country> result = new ArrayList<>();
     var gson = new Gson();
     var parser = new JsonParser();
     JsonArray jsonArray = parser.parse(gson.toJson(countries)).getAsJsonArray();
-    var resultArray = new JsonArray();
     for (var i = 0; i < jsonArray.size(); i++) {
       var jsonObject = (JsonObject) jsonArray.get(i);
-
       List<String> excludedFields = getExcludedFields(fields);
       for (String excludedField : excludedFields) {
         jsonObject.remove(excludedField);
       }
-      resultArray.add(jsonObject);
+      result.add(gson.fromJson(jsonObject, Country.class));
     }
-    return resultArray.toString();
+    return result;
   }
 
   private List<String> getExcludedFields(List<String> fields) {
-    List<String> excludedFields = new ArrayList<>(Arrays.asList(COUNTRY_FIELDS));
+    List<String> excludedFields = new ArrayList<>(Arrays.asList(ControllerHelper.COUNTRY_FIELDS_V2));
     excludedFields.removeAll(fields);
     return excludedFields;
   }
-
-  private Object getResponse(Response.Status status) {
-    var gson = new Gson();
-    return Response
-        .status(status)
-        .entity(gson.toJson(new ResponseEntity(status.getStatusCode(),
-            status.getReasonPhrase()))).build().getEntity();
-  }
-
+  
   private Object parsedCountry(Country country, String fields) {
     if (fields == null || fields.isEmpty()) {
       return country;
@@ -275,38 +269,6 @@ public class CountryControllerV2 {
     return jsonObject.toString();
   }
 
-  private static final String[] COUNTRY_FIELDS = new String[]{
-      "name",
-      "topLevelDomain",
-      "alpha2Code",
-      "alpha3Code",
-      "callingCodes",
-      "capital",
-      "altSpellings",
-      "region",
-      "subregion",
-      "translations",
-      "population",
-      "latlng",
-      "demonym",
-      "area",
-      "gini",
-      "timezones",
-      "borders",
-      "nativeName",
-      "numericCode",
-      "currencies",
-      "languages",
-      "flags",
-      "regionalBlocs",
-      "cioc",
-      "independent",
-      "continent",
-      "borders",
-      "flag",
-      "flags"
-  };
-
   private boolean isEmpty(String value) {
     return value == null || value.isEmpty();
   }

src/main/java/dev/amatos/restcountries/controller/CountryControllerV3.java

@@ -29,9 +29,162 @@ import javax.ws.rs.core.Response;
 public class CountryControllerV3 extends ControllerHelper {
 
   @Get(uri = "all", produces = MediaType.APPLICATION_JSON)
-  public Object getAllCountries(@QueryValue("fields") Optional<String> fields) {
+  public HttpResponse<Object> getAllCountries(@QueryValue("fields") Optional<String> fields) {
     var countries = CountryServiceV3.getInstance().getAll();
-    return checkFieldsAndParseCountries(fields, countries);
+    return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+  }
+
+  @Get("alpha/{alphacode}")
+  public HttpResponse<Object> getByAlpha(@PathVariable("alphacode") String alpha,
+      @QueryValue("fields") Optional<String> fields) {
+    if (alpha.contains("codes")) {
+      alpha = alpha.replace("codes=", "");
+    }
+    if (isEmpty(alpha) || alpha.length() < 2 || alpha.length() > 3) {
+      return ControllerHelper.badRequest();
+    }
+    var country = CountryServiceV3.getInstance().getByAlpha(alpha);
+    if (country != null && !country.isEmpty()) {
+      return HttpResponse.ok(checkFieldsAndParseCountry(country, fields));
+    }
+    return ControllerHelper.notFound();
+  }
+
+  @Get("alpha/")
+  public HttpResponse<Object> getByAlphaList(@QueryParam("codes") String codes,
+      @QueryParam("fields") Optional<String> fields) {
+    if (isEmpty(codes) || codes.length() < 2 || (codes.length() > 3 && !codes.contains(","))) {
+      return ControllerHelper.badRequest();
+    }
+    try {
+      var countries = CountryServiceV3.getInstance().getByCodeList(codes);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+
+  }
+
+  @Get("currency/{currency}")
+  public HttpResponse<Object> getByCurrency(@PathVariable("currency") String currency,
+      @QueryParam("fields") Optional<String> fields) {
+    if (isEmpty(currency)) {
+      return ControllerHelper.notFound();
+    }
+    try {
+      var countries = CountryServiceV3.getInstance().getByCurrency(currency);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("name/{name}")
+  public HttpResponse<Object> getByName(@PathVariable("name") String name,
+      @QueryParam("fullText") Optional<Boolean> fullText,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance()
+          .getByName(name, fullText.orElse(false));
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("capital/{capital}")
+  public HttpResponse<Object> getByCapital(@PathVariable("capital") String capital,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getByCapital(capital);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+
+  @Get("region/{region}")
+  public HttpResponse<Object> getByContinent(@PathVariable("region") String region,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getByRegion(region);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("subregion/{subregion}")
+  public HttpResponse<Object> getBySubRegion(@PathVariable("subregion") String subregion,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getBySubregion(subregion);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("lang/{lang}")
+  public HttpResponse<Object> getByLanguage(@PathVariable("lang") String language,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getByLanguage(language);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+
+  }
+
+  @Get("demonym/{demonym}")
+  public HttpResponse<Object> getByDemonym(@PathVariable("demonym") String demonym,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getByDemonym(demonym);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
+  }
+
+  @Get("translation/{translation}")
+  public HttpResponse<Object> getByTranslation(@PathVariable("translation") String translation,
+      @QueryParam("fields") Optional<String> fields) {
+    try {
+      var countries = CountryServiceV3.getInstance().getByTranslation(translation);
+      if (!countries.isEmpty()) {
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
+      }
+      return ControllerHelper.notFound();
+    } catch (Exception e) {
+      return ControllerHelper.internalError();
+    }
   }
 
   private Object checkFieldsAndParseCountries(Optional<String> fields,
@@ -43,22 +196,6 @@ public class CountryControllerV3 extends ControllerHelper {
     }
   }
 
-  @Get("alpha/{alphacode}")
-  public Object getByAlpha(@PathVariable("alphacode") String alpha,
-      @QueryValue("fields") Optional<String> fields) {
-    if (alpha.contains("codes")) {
-      alpha = alpha.replace("codes=", "");
-    }
-    if (isEmpty(alpha) || alpha.length() < 2 || alpha.length() > 3) {
-      return HttpResponse.badRequest(getResponse(Response.Status.BAD_REQUEST));
-    }
-    var country = CountryServiceV3.getInstance().getByAlpha(alpha);
-    if (country != null) {
-      return checkFieldsAndParseCountry(country, fields);
-    }
-    return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-  }
-
   private Object checkFieldsAndParseCountry(Set<Country> countries, Optional<String> fields) {
     if (fields.isPresent()) {
       return parsedCountry(countries, fields.get());
@@ -67,143 +204,6 @@ public class CountryControllerV3 extends ControllerHelper {
     }
   }
 
-  @Get("alpha/")
-  public Object getByAlphaList(@QueryParam("codes") String codes,
-      @QueryParam("fields") Optional<String> fields) {
-    if (isEmpty(codes) || codes.length() < 2 || (codes.length() > 3 && !codes.contains(","))) {
-      return HttpResponse.badRequest(getResponse(Response.Status.BAD_REQUEST));
-    }
-    try {
-      var countries = CountryServiceV3.getInstance().getByCodeList(codes);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(getResponse(Response.Status.INTERNAL_SERVER_ERROR));
-    }
-
-  }
-
-  @Get("currency/{currency}")
-  public Object getByCurrency(@PathVariable("currency") String currency,
-      @QueryParam("fields") Optional<String> fields) {
-    if (isEmpty(currency)) {
-      return getResponse(Response.Status.BAD_REQUEST);
-    }
-    try {
-      var countries = CountryServiceV3.getInstance().getByCurrency(currency);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(getResponse(Response.Status.INTERNAL_SERVER_ERROR));
-    }
-  }
-
-  @Get("name/{name}")
-  public Object getByName(@PathVariable("name") String name,
-      @QueryParam("fullText") Optional<Boolean> fullText,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance()
-          .getByName(name, fullText.orElse(false));
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("capital/{capital}")
-  public Object getByCapital(@PathVariable("capital") String capital,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getByCapital(capital);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-
-  @Get("region/{region}")
-  public Object getByContinent(@PathVariable("region") String region,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getByRegion(region);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("subregion/{subregion}")
-  public Object getBySubRegion(@PathVariable("subregion") String subregion,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getBySubregion(subregion);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("lang/{lang}")
-  public Object getByLanguage(@PathVariable("lang") String language,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getByLanguage(language);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-
-  }
-
-  @Get("demonym/{demonym}")
-  public Object getByDemonym(@PathVariable("demonym") String demonym,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getByDemonym(demonym);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
-  @Get("translation/{translation}")
-  public Object getByTranslation(@PathVariable("translation") String translation,
-      @QueryParam("fields") Optional<String> fields) {
-    try {
-      var countries = CountryServiceV3.getInstance().getByTranslation(translation);
-      if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
-      }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-    } catch (Exception e) {
-      return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
-    }
-  }
-
   private Object parsedCountries(Set<Country> countries, String excludedFields) {
     if (excludedFields == null || excludedFields.isEmpty()) {
       return countries;
@@ -233,37 +233,6 @@ public class CountryControllerV3 extends ControllerHelper {
     return excludedFields;
   }
 
-  private Object getResponse(Response.Status status) {
-    var gson = new Gson();
-    return Response
-        .status(status)
-        .entity(gson.toJson(new ResponseEntity(status.getStatusCode(),
-            status.getReasonPhrase())))
-        .build()
-        .getEntity();
-  }
-
-  private Object parsedCountry(Set<Country> countries, String fields) {
-    if (fields == null || fields.isEmpty()) {
-      return countries;
-    } else {
-      StringBuilder result = new StringBuilder();
-      countries.forEach(country -> result.append(
-          getCountryJson(country, Arrays.asList(fields.split(ICountryRestSymbols.COLON)))));
-      return result;
-    }
-  }
-
-  private String getCountryJson(Country country, List<String> fields) {
-    var gson = new Gson();
-    var parser = new JsonParser();
-    var jsonObject = parser.parse(gson.toJson(country)).getAsJsonObject();
-
-    List<String> excludedFields = getExcludedFields(fields);
-    excludedFields.forEach(jsonObject::remove);
-    return jsonObject.toString();
-  }
-
   private boolean isEmpty(String value) {
     return value == null || value.isEmpty();
   }

src/main/java/dev/amatos/restcountries/controller/CountryControllerV31.java

@@ -5,7 +5,6 @@ import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import dev.amatos.restcountries.domain.ICountryRestSymbols;
-import dev.amatos.restcountries.domain.ResponseEntity;
 import dev.amatos.restcountries.domain.v3.v31.Country;
 import dev.amatos.restcountries.service.v3.v31.CountryServiceV31;
 import io.micronaut.http.HttpResponse;
@@ -31,16 +30,7 @@ public class CountryControllerV31 extends ControllerHelper {
   @Schema(name="RestCountries")
   public Object getAllCountries(@QueryValue("fields") Optional<String> fields) {
     var countries = CountryServiceV31.getInstance().getAll();
-    return checkFieldsAndParseCountries(fields, countries);
-  }
-
-  private Object checkFieldsAndParseCountries(Optional<String> fields,
-      Set<Country> countries) {
-    if (fields.isPresent()) {
-      return parsedCountries(countries, fields.get());
-    } else {
-      return parsedCountries(countries, null);
-    }
+    return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
   }
 
   @Get("alpha/{alphacode}")
@@ -51,21 +41,13 @@ public class CountryControllerV31 extends ControllerHelper {
       alpha = alpha.replace("codes=", "");
     }
     if (isEmpty(alpha) || alpha.length() < 2 || alpha.length() > 3) {
-      return HttpResponse.badRequest(getResponse(Response.Status.BAD_REQUEST));
+      return ControllerHelper.badRequest();
     }
     var country = CountryServiceV31.getInstance().getByAlpha(alpha);
-    if (country != null) {
-      return checkFieldsAndParseCountry(country, fields);
-    }
-    return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
-  }
-
-  private Object checkFieldsAndParseCountry(Set<Country> countries, Optional<String> fields) {
-    if (fields.isPresent()) {
-      return parsedCountry(countries, fields.get());
-    } else {
-      return parsedCountry(countries, null);
+    if (country != null && !country.isEmpty()) {
+      return HttpResponse.ok(checkFieldsAndParseCountry(country, fields));
     }
+    return ControllerHelper.notFound();
   }
 
   @Get("alpha/")
@@ -73,16 +55,16 @@ public class CountryControllerV31 extends ControllerHelper {
   public Object getByAlphaList(@QueryParam("codes") String codes,
       @QueryParam("fields") Optional<String> fields) {
     if (isEmpty(codes) || codes.length() < 2 || (codes.length() > 3 && !codes.contains(","))) {
-      return HttpResponse.badRequest(getResponse(Response.Status.BAD_REQUEST));
+      return ControllerHelper.badRequest();
     }
     try {
       var countries = CountryServiceV31.getInstance().getByCodeList(codes);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
-      return HttpResponse.serverError(getResponse(Response.Status.INTERNAL_SERVER_ERROR));
+      return ControllerHelper.internalError();
     }
 
   }
@@ -92,16 +74,16 @@ public class CountryControllerV31 extends ControllerHelper {
   public Object getByCurrency(@PathVariable("currency") String currency,
       @QueryParam("fields") Optional<String> fields) {
     if (isEmpty(currency)) {
-      return getResponse(Response.Status.BAD_REQUEST);
+      return ControllerHelper.badRequest();
     }
     try {
       var countries = CountryServiceV31.getInstance().getByCurrency(currency);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
-      return HttpResponse.serverError(getResponse(Response.Status.INTERNAL_SERVER_ERROR));
+      return ControllerHelper.internalError();
     }
   }
 
@@ -113,9 +95,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByName(name, fullText.orElse(false));
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -128,9 +110,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByCapital(capital);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -144,9 +126,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByRegion(region);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -159,9 +141,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getBySubregion(subregion);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -174,9 +156,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByLanguage(language);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -190,9 +172,9 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByDemonym(demonym);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
@@ -205,14 +187,31 @@ public class CountryControllerV31 extends ControllerHelper {
     try {
       var countries = CountryServiceV31.getInstance().getByTranslation(translation);
       if (!countries.isEmpty()) {
-        return checkFieldsAndParseCountries(fields, countries);
+        return HttpResponse.ok(checkFieldsAndParseCountries(fields, countries));
       }
-      return HttpResponse.notFound(getResponse(Response.Status.NOT_FOUND));
+      return ControllerHelper.notFound();
     } catch (Exception e) {
       return HttpResponse.serverError(Response.Status.INTERNAL_SERVER_ERROR);
     }
   }
 
+  private Object checkFieldsAndParseCountries(Optional<String> fields,
+      Set<Country> countries) {
+    if (fields.isPresent()) {
+      return parsedCountries(countries, fields.get());
+    } else {
+      return parsedCountries(countries, null);
+    }
+  }
+
+  private Object checkFieldsAndParseCountry(Set<Country> countries, Optional<String> fields) {
+    if (fields.isPresent()) {
+      return parsedCountry(countries, fields.get());
+    } else {
+      return parsedCountry(countries, null);
+    }
+  }
+
   private Object parsedCountries(Set<Country> countries, String excludedFields) {
     if (excludedFields == null || excludedFields.isEmpty()) {
       return countries;
@@ -242,37 +241,6 @@ public class CountryControllerV31 extends ControllerHelper {
     return excludedFields;
   }
 
-  private Object getResponse(Response.Status status) {
-    var gson = new Gson();
-    return Response
-        .status(status)
-        .entity(gson.toJson(new ResponseEntity(status.getStatusCode(),
-            status.getReasonPhrase())))
-        .build()
-        .getEntity();
-  }
-
-  private Object parsedCountry(Set<Country> countries, String fields) {
-    if (fields == null || fields.isEmpty()) {
-      return countries;
-    } else {
-      StringBuilder result = new StringBuilder();
-      countries.forEach(country -> result.append(
-          getCountryJson(country, Arrays.asList(fields.split(ICountryRestSymbols.COLON)))));
-      return result;
-    }
-  }
-
-  private String getCountryJson(Country country, List<String> fields) {
-    var gson = new Gson();
-    var parser = new JsonParser();
-    var jsonObject = parser.parse(gson.toJson(country)).getAsJsonObject();
-
-    List<String> excludedFields = getExcludedFields(fields);
-    excludedFields.forEach(jsonObject::remove);
-    return jsonObject.toString();
-  }
-
   private boolean isEmpty(String value) {
     return value == null || value.isEmpty();
   }

src/main/java/dev/amatos/restcountries/service/v2/CountryServiceBaseV2.java

@@ -19,145 +19,159 @@ import org.apache.logging.log4j.Logger;
 
 public class CountryServiceBaseV2 {
 
-    private static final Logger logger = LogManager.getLogger(CountryServiceBaseV2.class);
+  private static final Logger logger = LogManager.getLogger(CountryServiceBaseV2.class);
 
-    protected <T extends BaseCountry> T getByAlpha(String alpha, List<T> countries) {
-        int alphaLength = alpha.length();
-        for (T country : countries) {
-            if (alphaLength == 2) {
-                if (country.getAlpha2Code().equalsIgnoreCase(alpha)) {
-                    return country;
-                }
-            } else if (alphaLength == 3 && country.getAlpha3Code().equalsIgnoreCase(alpha)) {
-                return country;
-            }
+  protected <T extends BaseCountry> T getByAlpha(String alpha, List<T> countries) {
+    int alphaLength = alpha.length();
+    for (T country : countries) {
+      if (alphaLength == 2) {
+        if (country.getAlpha2Code().equalsIgnoreCase(alpha)) {
+          return country;
         }
-        return null;
+      } else if (alphaLength == 3 && country.getAlpha3Code().equalsIgnoreCase(alpha)) {
+        return country;
+      }
     }
+    return null;
+  }
 
-    protected List<? extends BaseCountry> getByCodeList(String codeList, List<? extends BaseCountry> countries) {
-        List<BaseCountry> result = new ArrayList<>();
-        if (codeList == null) return result;
+  protected List<? extends BaseCountry> getByCodeList(String codeList,
+      List<? extends BaseCountry> countries) {
+    List<BaseCountry> result = new ArrayList<>();
+      if (codeList == null) {
+          return result;
+      }
 
-        String[] codes = codeList.split(ICountryRestSymbols.COLON);
-        for (String code : codes) {
-            BaseCountry country = getByAlpha(code, countries);
-            if (!result.contains(country))
-                result.add(country);
-        }
-        return result;
-    }
-
-    protected List<? extends BaseCountry> getByName(String name, boolean fullText, List<? extends BaseCountry> countries) {
-        if (fullText) {
-            return fulltextSearch(name, countries);
-        } else {
-            return substringSearch(name, countries);
+    String[] codes = codeList.split(ICountryRestSymbols.COLON);
+    for (String code : codes) {
+      BaseCountry country = getByAlpha(code, countries);
+        if (null != country && !result.contains(country)) {
+            result.add(country);
         }
     }
+    return result;
+  }
 
-    protected List<? extends BaseCountry> getByCallingCode(String callingCode, List<? extends BaseCountry> countries) {
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            for (String c : country.getCallingCodes()) {
-                if (c.equals(callingCode))
-                    result.add(country);
-            }
-        }
-        return result;
+  protected List<? extends BaseCountry> getByName(String name, boolean fullText,
+      List<? extends BaseCountry> countries) {
+    if (fullText) {
+      return fulltextSearch(name, countries);
+    } else {
+      return substringSearch(name, countries);
     }
+  }
 
-    protected List<? extends BaseCountry> getByCapital(String capital, List<? extends BaseCountry> countries) {
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            if (normalize(country.getCapital().toLowerCase()).contains(normalize(capital.toLowerCase()))) {
-                result.add(country);
-            }
-        }
-        return result;
+  protected List<? extends BaseCountry> getByCallingCode(String callingCode,
+      List<? extends BaseCountry> countries) {
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      for (String c : country.getCallingCodes()) {
+          if (c.equals(callingCode)) {
+              result.add(country);
+          }
+      }
     }
+    return result;
+  }
 
-    protected List<? extends BaseCountry> getByRegion(String region, List<? extends BaseCountry> countries) {
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            if (country.getRegion().equalsIgnoreCase(region)) {
-                result.add(country);
-            }
-        }
-        return result;
+  protected List<? extends BaseCountry> getByCapital(String capital,
+      List<? extends BaseCountry> countries) {
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      if (normalize(country.getCapital().toLowerCase()).contains(
+          normalize(capital.toLowerCase()))) {
+        result.add(country);
+      }
     }
+    return result;
+  }
 
-    protected List<? extends BaseCountry> getBySubregion(String subregion, List<? extends BaseCountry> countries) {
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            if (country.getSubregion().equalsIgnoreCase(subregion)) {
-                result.add(country);
-            }
-        }
-        return result;
+  protected List<? extends BaseCountry> getByRegion(String region,
+      List<? extends BaseCountry> countries) {
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      if (country.getRegion().equalsIgnoreCase(region)) {
+        result.add(country);
+      }
     }
+    return result;
+  }
 
-    private List<? extends BaseCountry> fulltextSearch(String name, List<? extends BaseCountry> countries) {
-        // Using 2 different 'for' loops to give priority to 'name' matches over alternative spellings
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            if (normalize(country.getName().toLowerCase()).equals(normalize(name.toLowerCase()))) {
-                result.add(country);
-            }
-        }
-        for (BaseCountry country : countries) {
-            for (String alternative : country.getAltSpellings()) {
-                if (normalize(alternative.toLowerCase()).equals(normalize(name.toLowerCase()))
-                        && !result.contains(country)) {
-                    result.add(country);
-                }
-            }
-        }
-        return result;
+  protected List<? extends BaseCountry> getBySubregion(String subregion,
+      List<? extends BaseCountry> countries) {
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      if (country.getSubregion().equalsIgnoreCase(subregion)) {
+        result.add(country);
+      }
     }
+    return result;
+  }
 
-    private List<? extends BaseCountry> substringSearch(String name, List<? extends BaseCountry> countries) {
-        // Using 2 different 'for' loops to give priority to 'name' matches over alternative spellings
-        List<BaseCountry> result = new ArrayList<>();
-        for (BaseCountry country : countries) {
-            if (normalize(country.getName().toLowerCase()).contains(normalize(name.toLowerCase()))) {
-                result.add(country);
-            }
-        }
-        for (BaseCountry country : countries) {
-            for (String alternative : country.getAltSpellings()) {
-                if (normalize(alternative.toLowerCase()).contains(normalize(name.toLowerCase()))
-                        && !result.contains(country)) {
-                    result.add(country);
-                }
-            }
-        }
-        return result;
+  private List<? extends BaseCountry> fulltextSearch(String name,
+      List<? extends BaseCountry> countries) {
+    // Using 2 different 'for' loops to give priority to 'name' matches over alternative spellings
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      if (normalize(country.getName().toLowerCase()).equals(normalize(name.toLowerCase()))) {
+        result.add(country);
+      }
     }
+    for (BaseCountry country : countries) {
+      for (String alternative : country.getAltSpellings()) {
+        if (normalize(alternative.toLowerCase()).equals(normalize(name.toLowerCase()))
+            && !result.contains(country)) {
+          result.add(country);
+        }
+      }
+    }
+    return result;
+  }
 
-    protected String normalize(String string) {
-        return Normalizer.normalize(string, Normalizer.Form.NFD)
-                .replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
+  private List<? extends BaseCountry> substringSearch(String name,
+      List<? extends BaseCountry> countries) {
+    // Using 2 different 'for' loops to give priority to 'name' matches over alternative spellings
+    List<BaseCountry> result = new ArrayList<>();
+    for (BaseCountry country : countries) {
+      if (normalize(country.getName().toLowerCase()).contains(normalize(name.toLowerCase()))) {
+        result.add(country);
+      }
     }
-
-    protected List<? extends BaseCountry> loadJson(String filename, Class<? extends BaseCountry> clazz) {
-        logger.info("Loading JSON {}", filename);
-        List<BaseCountry> countries = new ArrayList<>();
-        InputStream is = CountryServiceBaseV2.class.getClassLoader().getResourceAsStream(filename);
-        var gson = new Gson();
-        JsonReader reader;
-        try {
-            assert is != null;
-            reader = new JsonReader(new InputStreamReader(is, StandardCharsets.UTF_8));
-            reader.beginArray();
-            while (reader.hasNext()) {
-                BaseCountry country = gson.fromJson(reader, clazz);
-                countries.add(country);
-            }
-        } catch (Exception e) {
-            e.printStackTrace();
-            logger.error("Could not load JSON {}", filename);
+    for (BaseCountry country : countries) {
+      for (String alternative : country.getAltSpellings()) {
+        if (normalize(alternative.toLowerCase()).contains(normalize(name.toLowerCase()))
+            && !result.contains(country)) {
+          result.add(country);
         }
-        return countries;
+      }
     }
+    return result;
+  }
+
+  protected String normalize(String string) {
+    return Normalizer.normalize(string, Normalizer.Form.NFD)
+        .replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
+  }
+
+  protected List<? extends BaseCountry> loadJson(String filename,
+      Class<? extends BaseCountry> clazz) {
+    logger.info("Loading JSON {}", filename);
+    List<BaseCountry> countries = new ArrayList<>();
+    InputStream is = CountryServiceBaseV2.class.getClassLoader().getResourceAsStream(filename);
+    var gson = new Gson();
+    JsonReader reader;
+    try {
+      assert is != null;
+      reader = new JsonReader(new InputStreamReader(is, StandardCharsets.UTF_8));
+      reader.beginArray();
+      while (reader.hasNext()) {
+        BaseCountry country = gson.fromJson(reader, clazz);
+        countries.add(country);
+      }
+    } catch (Exception e) {
+      e.printStackTrace();
+      logger.error("Could not load JSON {}", filename);
+    }
+    return countries;
+  }
 }

src/main/resources/countriesV2.json

@@ -329,7 +329,7 @@
 		"name": "Algeria",
 		"nativeName": "\u0627\u0644\u062c\u0632\u0627\u0626\u0631",
 		"numericCode": "012",
-		"population": 43851043,
+		"population": 44700000,
 		"region": "Africa",
 		"regionalBlocs": [
 			{

src/main/resources/countriesV3.1.json

@@ -13253,7 +13253,7 @@
 			"svg": "https://mainfacts.com/media/images/coats_of_arms/dz.svg",
 			"png": "https://mainfacts.com/media/images/coats_of_arms/dz.png"
 		},
-		"population": 510713,
+		"population": 44700000,
 		"maps": {
 			"googleMaps": "https://goo.gl/maps/RsAyAfyaiNVb8DpW8",
 			"openStreetMaps": "https://www.openstreetmap.org/relation/192756"
@@ -46910,7 +46910,7 @@
 				"68"
 			]
 		},
-		"capital": [],
+		"capital": ["Washington DC"],
 		"capitalInfo": {
 			"latlng": []
 		},

src/main/resources/countriesV3.json

@@ -12274,7 +12274,7 @@
 			"https://flagcdn.com/dz.svg",
 			"https://flagcdn.com/w320/dz.png"
 		],
-		"population": 510713,
+		"population": 44700000,
 		"maps": {
 			"googleMaps": "https://goo.gl/maps/RsAyAfyaiNVb8DpW8",
 			"openStreetMaps": "https://www.openstreetmap.org/relation/192756"